Explanipedia

Low-Frequency Acoustic Vibration Characteristics of Cylindrical Shells With Anisotropic Mechanical Material Open

Yin Danjie, Xiaowei Yan, Hao Song, Kaijun Yi, Ping Xiang , et al. · 2025

A precise acoustic vibration characteristic model of a cylindrical shell with anisotropic mechanical material was established based on three-dimensional elasticity theory and state space vector, and the accuracy of the analytical model was…

Effective modulation of electric field distribution through microstructuring of indium tin oxide films Open

Jialin Ji, Kaijun Yi · 2025

This study proposes a transparent conductive thin film microstructure capable of effectively modulating the optical properties of the film. Simulation results show that grating-structured indium tin oxide (ITO) films can modulate the surfa…

Aqueous-Phase Preparation of Mn-Doped Perovskites for Three-Mode Detection of Chloride Ions in Sweat Open

Yilong Tian, Meng Xu, Feng Gong, Kaijun Yi, Hui Xu , et al. · 2025

Inherent Temporal Metamaterials with Unique Time‐Varying Stiffness and Damping Open

Zhiyuan Liu, Kaijun Yi, Haopeng Sun, Rui Zhu, Xiaoming Zhou , et al. · 2024

Time‐varying metamaterials offer new degrees of freedom for wave manipulation and enable applications unattainable with conventional materials. In these metamaterials, the pattern of temporal inhomogeneity is crucial for effective wave con…

Broadening bandgaps in a multi-resonant piezoelectric metamaterial plate via bandgap merging phenomena Open

Yuhao Li, Zhiyuan Liu, Hao Zhou, Kaijun Yi, Rui Zhu · 2024

Locally resonant metamaterials usually have narrow bandgaps, which significantly limits their applications in realistic engineering environments. In this paper, an optimization method based on the genetic algorithm is proposed to broaden b…

Design of cylindrical metashells with piezoelectric materials and digital circuits for multi-modal vibration control Open

Danjie Yin, Kaijun Yi, Zhiyuan Liu, Anfu Zhang, Rui Zhu · 2022

Thin-walled cylindrical shells are widely used in industries, such as the main parts of aircrafts, rockets, and submarines. Except for meeting the load-bearing capacities, such structures must also have good vibration and acoustic performa…

Passive discrete lens for broadband elastic guided wave focusing Open

Émeline Sadoulet-Reboul, Gaël Matten, Kaijun Yi, Morvan Ouisse · 2021

Elastic guided wave focusing is of great interest for applications such as vibroacoustic control, energy harvesting, or Structural Health Monitoring. Different strategies allow generation of this effect, GRadient-INdex devices in particula…

Review of “Passive discrete lens for broadband elastic guided wave focusing” Open

Émeline Sadoulet-Reboul, Morvan Ouisse, Gaël Matten, Kaijun Yi, Olivier Thomas · 2021

Open Review of “Passive discrete lens for broadband elastic guided wave focusing” by Emeline Sadoulet-Reboul, Gaël Matten, Kaijun Yi, Morvan Ouisse.

Broadening low-frequency bandgaps in locally resonant piezoelectric metamaterials by negative capacitance Open

Kaijun Yi, Manuel Collet · 2020

Programmable metamaterials with digital synthetic impedance circuits for vibration control Open

Kaijun Yi, Gaël Matten, Morvan Ouisse, Émeline Sadoulet-Reboul, Manuel Collet , et al. · 2019

International audience

Enhancement of energy harvesting using acoustical-black-hole-inspired wave traps Open

Fabien Maugan, Simon Chesné, Mélodie Monteil, Manuel Collet, Kaijun Yi · 2019

The purpose of this paper is to highlight the interest of associating smart functionalities in the same smart-structure. It consists in combining a wave trap device with an energy harvester on a beam. Both functions are performed using pie…

Active metamaterials with broadband controllable stiffness for tunable band gaps and non-reciprocal wave propagation Open

Kaijun Yi, Morvan Ouisse, Émeline Sadoulet-Reboul, Gaël Matten · 2019

International audience

One-way energy insulation using time-space modulated structures Open

Kaijun Yi, Sami Karkar, Manuel Collet · 2018

Smart metacomposite-based systems for transient elastic wave energy harvesting Open

Kaijun Yi, Mélodie Monteil, Manuel Collet, Simon Chesné · 2017

In this paper, novel harvesting systems are proposed and studied to obtain enhanced energy from transient waves. Each of these systems contains a piezo-lens to focus waves and a harvester to yield energy from the induced focused waves. The…

Controlling Guided Elastic Waves Using Adaptive Gradient-Index Structures Open

Kaijun Yi · 2017

Les matériaux à gradient d'indice de réfraction (GRIN) présentent des propriétés mécaniques variant en temps ou/et en espace. Ils ont été testés pour des applications prometteuses dans de nombreuses applications d'ingénierie, comme pour le…

Sound insulation performance of plates with interconnected distributed piezoelectric patches Open

Kaijun Yi, Lin Li, Mohamed Ichchou, Manuel Collet · 2016

This paper deals with the sound insulation performance of a thin plate with interconnected distributed piezoelectric patches. Piezoelectric patches are periodically bonded on the surfaces of the plate in a collocated fashion, and are inter…

Flexural waves focusing through shunted piezoelectric patches Open

Kaijun Yi, Manuel Collet, Mohamed Ichchou, L Li · 2016

In this paper, we designed and analyzed a piezo-lens to focus flexural waves in thin plates. The piezo-lens is comprised of a host plate and piezoelectric arrays bonded on the surfaces of the plate. The piezoelectric patches are shunted wi…

Sound insulation performance of plate with interconnected distributed piezoelectric patches Open

Kaijun Yi, Lin Li, Manuel Collet, Mohamed Ichchou · 2015

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